Improvement in gas-regulating burners



J. J. KBNNBVAN. `Gas-RegulatingBurner.

` No. 213,335. Patented'm'ar. 18,1879;

UNITED STATES PATENT OFFICE.

JOHN J. KENNEVAN, OF BOSTON, MASSACHUSETTS.

IMPROVEMENT IN GAS-REGULATING BURNERS.

Specification forming part of Letters Patent No. 213,335, dated M arch18, 1879; application filed January 25, 1879.

To all 'whom it 'may concern Be it known that I, JOHN J. KENNEVAN, ofBoston, county of Suli'olk, and State of Massachusetts, have invented anImproved Automatic 'Pressnre Regulating Gas Burner, of which thefollowing is afull, clear, and exact description, reference being had tothe accompanying drawings, making part oi' this speciiication, in which-Figure l is a vertical section through the center of a gasburnerconstructed in accordance with my invention. Fig. 2 is a perspectiveview of the same, with the upper portion of the shell and its tipremoved.

My invention has for its object to provide a gasburner which, afterbeing' adjusted to burn a given quantity of gas, will regulate itselt`automatically, so that the amount of gas consumed per hour will remainthe same without regard to the pressure in the street-pipes or Athe sizeof the oriiice at the tip of the burner through which the gas escapes;and my invention consists in certain details of construetion, ashereinafter set forth and specifically claimed.

To enable others skilled in the art to understand and use my invention,I will proceed to describe the manner in which Il have carried it out.

In the said drawings, A represents the shell of a gas-burner, which isformed of two portions, a

I), screwed together at c, the upper portion, b, being provided with anordinary removable tip, d. Across the top of the lower portion, a., ot'the shell extends a leather diaphragm, B, which is stretched over avertical iiange, e, and secured thereon by means of a ring, j', forcedover it. This diaphragm serves to divide the interior oi' the burnerinto two separate chambers, g h, which communicate with eachother.through a short tube, ',`which is securedto the diaphragm by meansof screwnuts 7c 7c on its opposite sides, the bottom of the tube i beingopen, and the portion above the diaphragm being provided with one ormore lateral apertures, l, through which the gas from the chamber g isfree to iioW into the chamber h, and thence to the tip d, where it isburned. l

Within the lower end of the burner is screwed a short tube, G, whichextends up into the chamber g, and at the top oi' this tube is formed aconical aperture, m, the sides ot' which constitute a seat for theconical valve a, the vertical stem p of which passes up through the tubee', at the upper end of which is formed a screw-thread, with whichengages a corre spon ding thread cut on the outside of the stem p, sothat by turning the latter the position of the valve with respect to itsseat, and the consequent size of the inlet-aperture m, can be regulatedto vary the amount of gas consumed, the diameter of' the stem p beingless than that of the interior of the tube i, so as to leave a spacebetween them for the free passjage of the gas from the chamber g to thechamer h.

If desired, the diaphragm B may be weighted by using one or morewashers, 1, which are slipped over the tube i, and serve to depress thediaphragm quickly when the pressure is removed from its under surface.

The valve a having been adjusted to cause l the burner to consume agiven number of feet of gas per hour, (which can be determined by asuitable test,) the stop-cock (not shown) is opened and the gas flows upthrough the tube C and conical aperture 'm into the chamber g, and upthrough the tube i into the chamber 71 whence it passes directly to thetip d., and when lighted the pressure of the gas on the under side ofthe diaphragm is such that the valve u will be maintained at suchdist-ance from its seat as to admit the exact quantity of gas desired;and should the pressure of the gas in th e street-m ain increase, the addi tional pressure upon the under side of the diaphragm B will raise itand the valve u, so as to contract the size of the inlet-aperture msufficiently to allow of the passage to the tip d of only just thepredetermined :number of feet of gas per hour; and any diminution of thepressure of the gas will cause a proportional descent of the valve a,and consequent enlargement ot' the inlet-aperture to a size sufficientto admit exactly the same number of feet of gas per hour, as before; andthus, after the valve a is once adjusted, there will bc no variationwhat ever in the quantity of gas burned in a given time until a newadjustment is effected, whether the pressure in the gas-pipes be more orless, or the size of the outletoritice where the gas is burned bcincreased or diminished, a burner thus constructed being well adaptedfor street-lamps, where it is Qf great importance to know that a burner,after being once.

adjusted for a given quantity of gas per hour, cannot by any possibilitybe made to consume a greater quantity, even it' the tip should be blownout or one with a larger orifice be substituted, or the pressure of thegas should be increased.

Byconstructin g the burner with two separate gas-chambers, communicatingwith each other as desired, the gas is allowed to come into contact withthe upper as well as the under sur face of the diaphragm, which is agreat advantage, as the oil contained in the gas is thus allowed to'actequally upon both surfaces of the leather diaphragm, and servesv as apreservative to keep it soft and pliable and prevent it from cracking,and thus becoming useless, as is liable to occur where the gascomesvinto contact with the under side only of the dif aphragm, as heretofore,in which case the upper surface soon becomes dry and cracked, when thediaphragm must be replaced by a newl one.

The above-described burner, which is of eX- ceedingly simpleconstruction and is not liable to get out'oi' order, presents thefurther advantage that if thefdiaphragm'should breakor give away fromany cause the gas will' pass directly up to the tip, as in a burner ofordinary construction.

It is evident that my. inventionI may be applied to automaticpressure-regulators for use in connection with a number of burnerswithout departing from the spirit of my invention.

I amaware that a valve operated by a iiexible 'diaphragm through themedium of the gas pressure is not new, and hence I make no claimthereto; but

What I claim as my invention is- -Inf combination with a gas-burner orpressure-regulator having its interior divided by a ileXible diaphragminto two separate gas-chambers, g h, the tube il, attached to thediaphragm and forming a means of communication be twecn-the-twogas-chambers, and the valve a, having its stemmade adjust-able withinthe tube t', through which it passes, ally construct ed to operatesubstantially in thefinanner and.

for the purpose described.

Witness my hand this 20thday of January,

JOHN J. KENNEVAN- In presence of- P. E. TEscHEMAcHER, W. J. CAMBRIDGE.

It is herab)l certified that the word occurring in the rst line nf theclaim, between the words in :1nd combination of' the printedspecification herein contained, is notfunnd in th original specicatin onfile in the Patent O'ce.

April 3, 1379.

